US Patent Issued to PIXART IMAGING on Nov. 25 for "FIR infrared (FIR) sensor with two absorption layers" (Taiwanese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,484,446, issued on Nov. 25, was assigned to PIXART IMAGING INC. (Hsin-Chu County, Taiwan).

"FIR infrared (FIR) sensor with two absorption layers" was invented by Ming-Han Tsai (Hsin-Chu County, Taiwan) and Chih-Fan Hu (Hsin-Chu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a far infrared (FIR) sensor device including a substrate, a thermopile structure and a heat absorption layer. The thermopile structure is arranged on the substrate. The heat absorption layer covers upon the thermopile structure, wherein the heat absorption layer has a hollow space which is formed by etching a metal layer in the heat absorption layer."...